Last spring, while researching recent-date Canadian 5-cent pieces for a study still in progress, I decided to also check for centralized doubled dies. Centralized doubled dies are of the sort that have become the standard on U.S. coins since the single-squeeze hubbing process replaced the old multiple hubbing process in the late 1980s.
It seemed to me that since Canada switched over to the single-squeeze hubbing process (known in Canada as restrain hubbing) in the late 1970s that they too may be producing centralized doubled dies that ...
Full Article: Canada 2006 5 Cents All Have Doubled Dies - Numismaster
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